Typescript Mini Reference: A Quick Guide to the Typescript Programming Language for Busy Coders: 4

Typescript is a better jаvascript, It is a statically typed, safe programming language, which uses more or less the same syntax as jаvascript. Typescript programs are compiled to jаvascript, and they can be run anywhere jаvascript is supported. It is widely used by professional jаvascript developers, for frontend development (e.g., Angular, React, and VueJS) as well as for backend development (e.g., Node.Js and Deno). This book is a "mini" language reference on the Typescript programming language. We go through all essential features of Typescript (as of versions 4.8 and 4.9), and some new ECMAScript features, in this book. Although it is written as a reference, however, you can read it more or less from beginning to end and you should be able to get the overall picture of the Typescript language if you have some prior experience with programming in Typescript or modern jаvascript (ES2015 and later). Typescript’s marketing slogan, in the early days, used to be TypeScript is a superset of jаvascript. This phrase, when interpreted literally, does not mean very much. For one thing, a programming language is not a mathematical set, and hence one programming language cannot be a superset of another. Regardless, Typescript uses the same or similar jаvascript syntax in many parts of its grammar, including (almost) all statements and expressions. Typescript’s extension over jаvascript is primarily limited to types. jаvascript is a dynamically and loosely typed language. It has pros and cons. For small projects, or for quick prototyping, dynamic languages like jаvascript or Python can be extremely convenient. On the other hand, when you work on bigger and longer-term projects, using statically typed languages tends to be increasingly more advantageous. Typescript’s new slogan is TypeScript is jаvascript with syntax for types. And, it emphasizes the tooling aspect of the programming language, at any scale. Typescript is widely used with many jаvascript application frameworks such as Angular, React, and Vuejs, which are primarily intended for building large-scale jаvascript apps. In fact, Typescript got a big break, as a new language, when the Angular team adopted Typescript as their default programming language for Angular version 2.0 (and, onward). As the saying goes, the rest is history. As of this writing (January 2023), React Native, another jаvascript-based hybrid mobile app development framework, also adopted Typescript as their primary language. The book covers: Typescript development basics. ES module system. Basic JS/TS types. Type annotations. Variable declarations. Type inference. Algebraic data types. Generics. Objects. Classes. Function types. Arrow functions. How to create new types from existing types. logo Hello, Welcome to EPUB Reader Click button to select your book Open EPUB book This Online Web App is made by Neo Reader for experimental purpose, it is a very simple EPUB Reader. We recommend you try our Neo Reader for better experience. Take a look now neat reader pc AD Ultimate EPUB Reader Totally free to try Support multiple file types, such as EPUB, MOBI, AZW3, AZW, PDF and TXT. Learn more about Neo Reader General Ebook Solution Preface Dear Readers: 1. Introduction 2. Typescript Basics 2.1. What is Typescript? 2.2. Static Typing 2.2.1. Type annotations 2.2.2. Static type checking 2.2.3. Type inference 2.3. Notes on Development Process 2.4. The Typescript Compiler 2.5. Typescript JSON Configuration File 2.5.1. Top-level options 2.5.2. compilerOptions 2.5.3. strict 2.5.4. strictNullChecks 2.5.5. noImplicitAny 2.5.6. noImplicitThis 3. Module System 3.1. ES Modules 3.2. Typescript Modules 3.3. Module Exports 3.3.1. (Regular) exports 3.3.2. Default exports 3.4. Module Imports 3.4.1. Module import 3.4.2. import - from Declaration 3.4.3. Default import 3.4.4. Name list import 3.4.5. Namespace import 3.5. Typescript Namespaces 4. Variables 4.1. The const Declaration 4.2. The let Declaration 4.3. The var Declaration 5. Basic Types 5.1. Javascript Types 5.1.1. The typeof operator 5.1.2. The instanceof operator 5.2. Strict Equality 5.3. Primitive Types 5.3.1. The boolean, number, and string types 5.3.2. The bigint Type 5.3.3. The symbol type 5.4. Literal Types 5.5. The any Type 5.6. The unknown Type 5.7. The null and undefined Types 5.8. The never Type 5.9. The void Type 5.10. The object Type 5.11. Function Types 5.12. Array Types 5.13. Tuple Types 5.14. Enum Types 6. Type Aliases 7. Type Annotations 7.1. Variable Annotations 7.2. Function Annotations 8. Assertions 8.1. Type Assertions 8.2. Const Assertions 8.3. Non-Null Assertions 9. Generics 9.1. Why Generics? 9.2. Generic Functions 9.3. Generic Types 9.4. Generic Type Constraints 10. Arrays 10.1. Generic Array 10.1.1. Array creation 10.1.2. Array iteration 10.2. Generic ReadonlyArray 11. Algebraic Data Types 11.1. Tuples 11.1.1. Fixed-size tuples 11.1.2. Generic tuples 11.1.3. Variadic tuples 11.2. Readonly Tuples 11.3. Union Types 11.3.1. Narrowing 11.4. Discriminated Unions 11.5. Intersection Types 12. Function Types 12.1. Function Definitions 12.2. Arrow Function Definitions 12.3. Function Types 12.3.1. Function type expressions 12.3.2. Function return types 12.3.3. Generic function alias 12.3.4. The Function type 12.4. Parameter List 12.4.1. Parameter initializers 12.5. Optional Parameters 12.6. The Rest Parameter 12.7. Parameter Destructuring 12.8. The this Parameter 12.8.1. Global context 12.8.2. Function context 12.9. Typescript Function Overloading 12.9.1. Overload signatures vs the implementation signature 13. Object Types 13.1. Object Literal Types 13.1.1. The empty object literal type 13.2. Object Type Members 13.2.1. Optional properties 13.2.2. Readonly properties 13.3. Index Signatures 13.3.1. Typescript index signatures 13.4. Getters and Setters 13.5. Member Methods 13.5.1. Method overloading 13.6. Structural Subtyping 14. Interfaces 14.1. Interface Types 14.2. Extending Interfaces 15. Classes 15.1. The ECMAScript Class 15.1.1. Class declaration 15.1.2. Class body 15.1.3. Fields 15.1.4. Accessors 15.1.5. Methods 15.1.6. Constructors 15.1.7. Static blocks 15.1.8. Inheritance 15.2. The Typescript Class 15.2.1. Constructors 15.2.2. Member visibility 15.2.3. Parameter properties 15.3. Abstract Classes 15.4. Implementing Interfaces 15.4.1. Implementing multiple interfaces 15.5. Generic Classes 16. Type Narrowing 16.1. Control Flow Analysis 16.2. The typeof Type Guard 16.3. The instanceof Type Guard 16.4. The in Operator Narrowing 16.5. Discriminated Unions 17. Advanced Types 17.1. Template Literal Types 17.2. The typeof Type Operator 17.3. The keyof Type Operator 17.4. Indexed Access Types 17.5. Conditional Types 17.6. Mapped Types Appendix A: How to Use This Book About the Author About the Series Community Support Become a Better Javascript Programmer! Typescript is a better Javascript, It is a statically typed, safe programming language, which uses more or less the same syntax as Javascript. Typescript programs are compiled to Javascript, and they can be run anywhere Javascript is supported. It is widely used by professional Javascript developers, for frontend development (e.g., Angular, React, and VueJS) as well as for backend development (e.g., Node.Js and Deno). This book is a "mini" language reference on the Typescript programming language. We go through all essential features of Typescript (as of versions 4.8 and 4.9), and some new ECMAScript features, in this book. Although it is written as a reference, however, you can read it more or less from beginning to end and you should be able to get the overall picture of the Typescript language (but not necessarily all the gory details) if you have some prior experience with programming in Typescript or modern Javascript (ES2015 and later). The book covers Typescript development basics. ES module system. Basic JS/TS types. Type annotations. Variable declarations. Type inference. Algebraic data types. Generics. Objects. Classes. Function types. Arrow functions. How to create new types from existing types. Order your copy today!